boolean start1=false; //boton de arranque en un sentido
boolean start2=false; //boton de arranque en otro sentido
boolean stop=false; //parada
boolean led1=false; //arranque motor
boolean led2=false; //arranque inverso

void setup() 
{
  Serial.begin(9600);
  pinMode(9, INPUT);
  pinMode(11, INPUT);
  pinMode(12, INPUT);
  pinMode(10, OUTPUT);
  pinMode(13, OUTPUT);
}

void loop() 
{
  start1 = digitalRead(9);
  start2 = digitalRead(11);
  stop = digitalRead(12);
  if(stop == HIGH)
 {
  led1 = false;
  led2 = false;
 }
  else if (start1 == HIGH && !led2)
  {
    led1 = true;
    led2 = false;
 }
  else if (start2 == HIGH && !led1)
  {
    led1 = false;
    led2 =true;
  }
  digitalWrite(10, led1 ? HIGH : LOW);
  digitalWrite(13, led2 ? HIGH : LOW);
}